无法获得所需的输出... AlarmManager和PendingIntent

Question

我正在创建一个电话提醒程序，用户输入他/她想要打电话的人的姓名和电话号码以及他/她想要提醒的日期和时间。当我运行应用程序时，我不要改变 DatePicker视图，事件发生在正确的时间。但是当我更改DatePicker视图时， 事件在点击提交按钮后立即发生。 我认为这里的问题是在onDateSet（）和onTimeSet（）方法中创建了Calendar的新对象，而变量timePicked并没有获得onDateSet（）和onTimeSet（）方法的值！你能帮助我吗？在onDateSet（）方法？ 这对我来说非常重要。

MainActivity.java

public class MainActivity extends Activity {
    public static EditText text;
    public static EditText text2;
    //public static int hour,minute,month,day,year;
public static long timePicked = -1;

static Calendar c;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        text = (EditText)findViewById(R.id.editText1);
        text2 = (EditText)findViewById(R.id.editText2);
        final Button btn = (Button)findViewById(R.id.button3);
        c= new GregorianCalendar();

        btn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                timePicked = c.getTimeInMillis();
                if (timePicked != -1) {
                    MyBroadcastReceiver alarm = new MyBroadcastReceiver();
                    if(alarm != null) alarm.setOnetimeTimer(MainActivity.this,timePicked);

                    btn.setText("ALARM SET");
                    Log.d("test", "ALARM SET!!!");
                } else {
                    //warn the user for ALARM not set?
                    Log.w("test", "ALARM not SET!!!");
                }
            }
        });

    }






public static class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
//final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);

// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    // Do something with the time chosen by the user
         //Calendar c = new GregorianCalendar();
            c.set(Calendar.HOUR_OF_DAY, hourOfDay);
            c.set(Calendar.MINUTE, minute);

           // timePicked = c.getTimeInMillis();
            Log.d("test", "timePicked: " + timePicked);
            Log.d("test", "current: " + System.currentTimeMillis() );
    }

}

public void showTimePickerDialog(View v) {
    DialogFragment newFragment = new TimePickerFragment();
    newFragment.show(getFragmentManager(),"timePicker");
}
public static class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
//final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
//long millis=c.getTimeInMillis(); 
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}

public void onDateSet(DatePicker view, int year, int month, int day) {
// Do something with the date chosen by the user
    //Calendar c = new GregorianCalendar();
    c.set(Calendar.YEAR, year);
    c.set(Calendar.MONTH, month);
    c.set(Calendar.DAY_OF_MONTH, month);
    //datePicked = c.getTimeInMillis();
    Log.d("test", "timePicked: " + timePicked);
    Log.d("test", "current: " + System.currentTimeMillis() );
}
}
public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getFragmentManager(),"datePicker");
}




}

MyBroadCastReceiver.java

  public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "test");

        //Acquire the lock
        wl.acquire();

        Toast.makeText(context, "Call"+MainActivity.text.getText()+MainActivity.text2.getText(), Toast.LENGTH_LONG).show();
        Log.i("test", "ALARM!!!");
        showNotification(context);
        Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
        vibrator.vibrate(2000);

        //Release the lock

        wl.release();
    }
    private void showNotification(Context context) {
        PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
                new Intent(context, MainActivity.class), 0);

        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("My notification")
                .setContentText("Call"+MainActivity.text.getText()+MainActivity.text2.getText());
        mBuilder.setContentIntent(contentIntent);
        mBuilder.setDefaults(Notification.DEFAULT_SOUND);
        mBuilder.setAutoCancel(true);
        NotificationManager mNotificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(1, mBuilder.build());
    }
    public void setOnetimeTimer(Context context, long when) {
        AlarmManager am = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(context, MyBroadcastReceiver.class);
        PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
        am.set(AlarmManager.RTC_WAKEUP, when, pi);
    }
}

XML

   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_marginTop="28dp"
        android:layout_toLeftOf="@+id/editText1"
        android:text="NAME" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/button2"
        android:layout_below="@+id/textView1"
        android:ems="10" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/editText1"
        android:text="Phone" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="14dp"
        android:layout_toRightOf="@+id/textView1"
        android:ems="10"
        android:inputType="phone" >

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_alignTop="@+id/button1"
        android:text="Set Reminder Time" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_marginRight="16dp"
        android:onClick="showTimePickerDialog"
        android:text="Select Time" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView3"
        android:layout_below="@+id/button1"
        android:layout_marginTop="41dp"
        android:text="Set Reminder Date" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_below="@+id/textView4"
        android:onClick="showDatePickerDialog"
        android:text="Select Date" />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="21dp"
        android:text="Submit" />

</RelativeLayout>

Answer 1

尝试添加到您的清单

<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.VIBRATE" />

和

<receiver android:name="YOUR.PACKAGE.NAME.MyBroadcastReceiver" />

最后一行需要接收器的外部类文件：
所以，MyBrodcastReceiver.java现在是：

public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "test");

        //Acquire the lock
        wl.acquire();

        Toast.makeText(context, "Call", Toast.LENGTH_LONG).show();
        Log.i("test", "ALARM!!!");

        Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
        vibrator.vibrate(2000);

        //Release the lock
        wl.release();
    }

    public void setOnetimeTimer(Context context, long when) {
        AlarmManager am = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(context, MyBroadcastReceiver.class);
        PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
        am.set(AlarmManager.RTC_WAKEUP, when, pi);
    }
}

然后拨打setOnetimeTimer在MainActivity onCreate {/ p>中设置闹钟：

public static long timePicked = -1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final Button btn = (Button)findViewById(R.id.button3);

    btn.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {

            if (timePicked != -1) {
                MyBroadcastReceiver alarm = new MyBroadcastReceiver();
                if(alarm != null) alarm.setOnetimeTimer(MainActivity.this, timePicked);

                btn.setText("ALARM SET");
                Log.d("test", "ALARM SET!!!");
            } else {
                //warn the user for ALARM not set?
                Log.w("test", "ALARM not SET!!!");
            }
        }
    });
}

最后和重要，从TimePickerFragment更改onTimeSet到此时间：

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    Calendar c = new GregorianCalendar();
    c.set(Calendar.HOUR_OF_DAY, hourOfDay);
    c.set(Calendar.MINUTE, minute);

    timePicked = c.getTimeInMillis();
    Log.d("test", "timePicked: " + timePicked);
    Log.d("test", "current: " + System.currentTimeMillis() );
}

经过测试和工作。 快乐的编码。

PS：请注意，此时不考虑日期选择器。